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Extruder for tackifying meltable polymers
The invention relates to an extruder for preparing fusible polymers by tackifying modification. An extruder screw with at least one helical screw thread (31, 32, 33, 34, 35) is installed inside a shell with inner shell grooves. The outer diameter of the extruder screw is divided into a starting diameter section, a central diameter section…
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A structure and its production process for an aluminum core frosted profile
The invention discloses a structure and production process of frosted profiles with embedded aluminum cores, relating to the technical field of profile doors and windows. The structure includes door and window frames, with door and window stiles attached to the top of the frames. Glass mouldings are clamped on the outer sides of the stiles,…
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Method for cleaning the hot end of a fused deposition modeling 3D printer
A method for cleaning the hot end of a fused deposition modeling 3D printer. The method includes: after printing with a first printing material at a first operating temperature of the hot end, setting the hot end to a second operating temperature, wherein the second operating temperature is equal to or higher than the first…
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A composition with good dielectric properties suitable for the electrical field and its preparation method
The invention discloses a composition with excellent dielectric properties suitable for the electrical field, which is prepared by the following steps: 1) Adding butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water into a reaction kettle for polymerization to obtain nitrile rubber latex; 2) Adding Compound A and performing ultrasonic dispersion; 3) Preparing an…
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A method for preparing a targeted long-circulating nanomedicine carrier for photothermal synergistic chemotherapy
The invention relates to a preparation method of targeted long-circulating nano drug carriers for photothermal synergistic chemotherapy. The preparation method comprises the following steps: preparing mesoporous silica; coating mesoporous silica with polydopamine; loading anti-cancer drugs; modifying erythrocyte membranes with biotin; wrapping the drug-loaded mesoporous silica with biotin-modified erythrocyte membranes. The present invention realizes local photothermal/chemotherapy…
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Long-chain polyamide resin composition and continuous fiber-reinforced long-chain polyamide composite material
The invention discloses a long carbon chain polyamide resin composition and a continuous fiber reinforced long carbon chain polyamide composite material. The long carbon chain polyamide resin composition comprises the following components in parts by weight: 81.8–99.8 parts of long carbon chain bio-based polyamide 5X resin, 0.2–1.6 parts of antioxidant, 0–0.8 parts of lubricant, 0–15…
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